// Simple Set Clipboard System
// Author: Joseph Huckaby

var ZeroClipboard = {

 version: "1.0.7",
 clients: {}, // registered upload clients on page, indexed by id
 moviePath: 'ZeroClipboard.swf', // URL to movie
 nextId: 1, // ID of next movie

 $: function(thingy) {
  // simple DOM lookup utility function
  if (typeof(thingy) == 'string') thingy = document.getElementById(thingy);
  if (!thingy.addClass) {
   // extend element with a few useful methods
   thingy.hide = function() { this.style.display = 'none'; };
   thingy.show = function() { this.style.display = ''; };
   thingy.addClass = function(name) { this.removeClass(name); this.className += ' ' + name; };
   thingy.removeClass = function(name) {
    var classes = this.className.split(/\s+/);
    var idx = -1;
    for (var k = 0; k < classes.length; k++) {
     if (classes[k] == name) { idx = k; k = classes.length; }
    }
    if (idx > -1) {
     classes.splice( idx, 1 );
     this.className = classes.join(' ');
    }
    return this;
   };
   thingy.hasClass = function(name) {
    return !!this.className.match( new RegExp("\\s*" + name + "\\s*") );
   };
  }
  return thingy;
 },

 setMoviePath: function(path) {
  // set path to ZeroClipboard.swf
  this.moviePath = path;
 },

 dispatch: function(id, eventName, args) {
  // receive event from flash movie, send to client		
  var client = this.clients[id];
  if (client) {
   client.receiveEvent(eventName, args);
  }
 },

 register: function(id, client) {
  // register new client to receive events
  this.clients[id] = client;
 },

 getDOMObjectPosition: function(obj, stopObj) {
  // get absolute coordinates for dom element
  var info = {
   left: 0,
   top: 0,
   width: obj.width ? obj.width : obj.offsetWidth,
   height: obj.height ? obj.height : obj.offsetHeight
  };

  while (obj && (obj != stopObj)) {
   info.left += obj.offsetLeft;
   info.top += obj.offsetTop;
   obj = obj.offsetParent;
  }

  return info;
 },

 Client: function(elem) {
  // constructor for new simple upload client
  this.handlers = {};

  // unique ID
  this.id = ZeroClipboard.nextId++;
  this.movieId = 'ZeroClipboardMovie_' + this.id;

  // register client with singleton to receive flash events
  ZeroClipboard.register(this.id, this);

  // create movie
  if (elem) this.glue(elem);
 }
};

ZeroClipboard.Client.prototype = {

 id: 0, // unique ID for us
 ready: false, // whether movie is ready to receive events or not
 movie: null, // reference to movie object
 clipText: '', // text to copy to clipboard
 handCursorEnabled: true, // whether to show hand cursor, or default pointer cursor
 cssEffects: true, // enable CSS mouse effects on dom container
 handlers: null, // user event handlers

 glue: function(elem, appendElem, stylesToAdd) {
  // glue to DOM element
  // elem can be ID or actual DOM element object
  this.domElement = ZeroClipboard.$(elem);

  // float just above object, or zIndex 99 if dom element isn't set
  var zIndex = 99;
  if (this.domElement.style.zIndex) {
   zIndex = parseInt(this.domElement.style.zIndex, 10) + 1;
  }

  if (typeof(appendElem) == 'string') {
   appendElem = ZeroClipboard.$(appendElem);
  }
  else if (typeof(appendElem) == 'undefined') {
   appendElem = document.getElementsByTagName('body')[0];
  }

  // find X/Y position of domElement
  var box = ZeroClipboard.getDOMObjectPosition(this.domElement, appendElem);

  // create floating DIV above element
  this.div = document.createElement('div');
  var style = this.div.style;
  style.position = 'absolute';
  style.left = '' + box.left + 'px';
  style.top = '' + box.top + 'px';
  style.width = '' + box.width + 'px';
  style.height = '' + box.height + 'px';
  style.zIndex = zIndex;

  if (typeof(stylesToAdd) == 'object') {
   for (addedStyle in stylesToAdd) {
    style[addedStyle] = stylesToAdd[addedStyle];
   }
  }

  // style.backgroundColor = '#f00'; // debug

  appendElem.appendChild(this.div);

  this.div.innerHTML = this.getHTML( box.width, box.height );
 },

 getHTML: function(width, height) {
  // return HTML for movie
  var html = '';
  var flashvars = 'id=' + this.id +
   '&width=' + width +
   '&height=' + height;

  if (navigator.userAgent.match(/MSIE/)) {
   // IE gets an OBJECT tag
   var protocol = location.href.match(/^https/i) ? 'https://' : 'http://';
   html += '<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="'+protocol+'download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0" width="'+width+'" height="'+height+'" id="'+this.movieId+'" align="middle"><param name="allowScriptAccess" value="always" /><param name="allowFullScreen" value="false" /><param name="movie" value="'+ZeroClipboard.moviePath+'" /><param name="loop" value="false" /><param name="menu" value="false" /><param name="quality" value="best" /><param name="bgcolor" value="#ffffff" /><param name="flashvars" value="'+flashvars+'"/><param name="wmode" value="transparent"/></object>';
  }
  else {
   // all other browsers get an EMBED tag
   html += '<embed id="'+this.movieId+'" src="'+ZeroClipboard.moviePath+'" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="'+width+'" height="'+height+'" name="'+this.movieId+'" align="middle" allowScriptAccess="always" allowFullScreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="'+flashvars+'" wmode="transparent" />';
  }
  return html;
 },

 hide: function() {
  // temporarily hide floater offscreen
  if (this.div) {
   this.div.style.left = '-2000px';
  }
 },

 show: function() {
  // show ourselves after a call to hide()
  this.reposition();
 },

 destroy: function() {
  // destroy control and floater
  if (this.domElement && this.div) {
   this.hide();
   this.div.innerHTML = '';

   var body = document.getElementsByTagName('body')[0];
   try { body.removeChild( this.div ); } catch(e) {;}

   this.domElement = null;
   this.div = null;
  }
 },

 reposition: function(elem) {
  // reposition our floating div, optionally to new container
  // warning: container CANNOT change size, only position
  if (elem) {
   this.domElement = ZeroClipboard.$(elem);
   if (!this.domElement) this.hide();
  }

  if (this.domElement && this.div) {
   var box = ZeroClipboard.getDOMObjectPosition(this.domElement);
   var style = this.div.style;
   style.left = '' + box.left + 'px';
   style.top = '' + box.top + 'px';
  }
 },

 setText: function(newText) {
  // set text to be copied to clipboard
  this.clipText = newText;
  if (this.ready) this.movie.setText(newText);
 },

 addEventListener: function(eventName, func) {
  // add user event listener for event
  // event types: load, queueStart, fileStart, fileComplete, queueComplete, progress, error, cancel
  eventName = eventName.toString().toLowerCase().replace(/^on/, '');
  if (!this.handlers[eventName]) this.handlers[eventName] = [];
  this.handlers[eventName].push(func);
 },

 setHandCursor: function(enabled) {
  // enable hand cursor (true), or default arrow cursor (false)
  this.handCursorEnabled = enabled;
  if (this.ready) this.movie.setHandCursor(enabled);
 },

 setCSSEffects: function(enabled) {
  // enable or disable CSS effects on DOM container
  this.cssEffects = !!enabled;
 },

 receiveEvent: function(eventName, args) {
  // receive event from flash
  eventName = eventName.toString().toLowerCase().replace(/^on/, '');

  // special behavior for certain events
  switch (eventName) {
   case 'load':
    // movie claims it is ready, but in IE this isn't always the case...
    // bug fix: Cannot extend EMBED DOM elements in Firefox, must use traditional function
    this.movie = document.getElementById(this.movieId);
    if (!this.movie) {
     var self = this;
     setTimeout( function() { self.receiveEvent('load', null); }, 1 );
     return;
    }

    // firefox on pc needs a "kick" in order to set these in certain cases
    if (!this.ready && navigator.userAgent.match(/Firefox/) && navigator.userAgent.match(/Windows/)) {
     var self = this;
     setTimeout( function() { self.receiveEvent('load', null); }, 100 );
     this.ready = true;
     return;
    }

    this.ready = true;
    this.movie.setText( this.clipText );
    this.movie.setHandCursor( this.handCursorEnabled );
    break;

   case 'mouseover':
    if (this.domElement && this.cssEffects) {
     this.domElement.addClass('hover');
     if (this.recoverActive) this.domElement.addClass('active');
    }
    break;

   case 'mouseout':
    if (this.domElement && this.cssEffects) {
     this.recoverActive = false;
     if (this.domElement.hasClass('active')) {
      this.domElement.removeClass('active');
      this.recoverActive = true;
     }
     this.domElement.removeClass('hover');
    }
    break;

   case 'mousedown':
    if (this.domElement && this.cssEffects) {
     this.domElement.addClass('active');
    }
    break;

   case 'mouseup':
    if (this.domElement && this.cssEffects) {
     this.domElement.removeClass('active');
     this.recoverActive = false;
    }
    break;
  } // switch eventName

  if (this.handlers[eventName]) {
   for (var idx = 0, len = this.handlers[eventName].length; idx < len; idx++) {
    var func = this.handlers[eventName][idx];

    if (typeof(func) == 'function') {
     // actual function reference
     func(this, args);
    }
    else if ((typeof(func) == 'object') && (func.length == 2)) {
     // PHP style object + method, i.e. [myObject, 'myMethod']
     func[0][ func[1] ](this, args);
    }
    else if (typeof(func) == 'string') {
     // name of function
     window[func](this, args);
    }
   } // foreach event handler defined
  } // user defined handler for event
 }

};
